Weighing scale



March 12, 1940.

E. M. SCHANTZ 2,193,648

WEIGHING SCALE Filed March 26, 1934 9 Sheets-Sheet 1 E. M. SCHANTZ Mar-211 12, 1940.

WEIGHING SCALE Filed larch 26, 1934 9 Sheets-Sheet 2 March 12, 1940.

-E. M. SCHANTZ wzmnme SCALE Filed larch 26, 1934 9 Sheets-Sheet 3 March 12, 1940- a. M. SCHANTZ WEIGHING SCALE Filed March 26, 1934 9 Sheets-Sheet 4 March 12, 1940. sc z 2,193,648

WEIGHING SCALE Filed larch 26, 1934 9 Sheets-Sheet 5 lif 12, 1940. I. M. SCHANTZ WELGHING'SCALE Filed larch 26, 1934 9 Sheets-Sheet e HQN @N W m hm ON .bb

March 12, 1940. E. SCHANTZ wnmnrpe SC AL E Filed larch 26, 1934 9 Sheets-Sheet 8 E. M. SCHANTZ 2,193,648

WEIGHING SCALE- Filed March 26, 1934 9 Sheets-Sheet 9 March 12, 1940.

Patented Mar. 12, 1940 UNITED STATES PATENT OFFICE WEIGHING SCALE Edwin M. Schantz, Dayton, Ohio, assignor to Toledo Scale Manufacturing Company, Toledo, Ohio, a corporation of New Jersey Application March 26,

20 Claims.

This invention relates to improvements in weighing scales and its purpose is to provide improved weighing mechanism by which the weightcf an object can be more accurately de- 6 termined than with the use of any of the forms of scales heretofore known in which some form of indicating or computing mechanism has been employed for indicating the weight.

In the weighing scales of the prior art, a por-- l0; tion of the energy represented by the load on the scale has been employed for actuating the indicating, computing or recording mechanism of the scale or for actuating some part by which that mechanism has been put in motion and the 5.. energy thus employed for actuating purposes has lessened the weight indicated or recorded and thus introduced into the weighing operation an error of greater or lesser magnitude, depending upon how much of the energy of the load has been thus consumed.

The principal object of to e present invention is to overcome the above mentioned difliculties by providing a novel form. of weighing mechanism in which the weight indicated, computed or rec rded without consuming any of the energy transmitted by the load to the weighing mechanism. A further object of the invention is to provide an improved scale in which the positions assumed by a movable part of the scale in response to the load placed on the scale is recorded while that part is at rest and locked against movement so that no part of the energy transmitted by the load is conveyed to the recording mechanism. Still another object of the invention is to provide scale comprising weigh-- ing mechanism responsive to the load and hav' ing a movable member adapted to move a distance proportional to the weight on the scale, in combinar-bionwith means for intermittently looking said member against mov ment and means for periodica y recording the position of said member while is so locked against movement. Another object of the invention is to provide a scale having a movable in response to the load on the scale in combination with separate power driven m ans for periodically look.-

ing said member against movement separate power driven means for actuating recording or computing mechanism and periodically recordin the position of said member in unison with the oneration or" said locking means. A. further object of the invention is to provide a movable scale beam actuated by the load in combination with power driven means for intermittently locking said beam against movement 1934, Serial Natives":

for indicating the weight on the scale and also,

preferably,.novel means for computing and indicating the price of the goods weighed. Other objectsrelate to various features of construction and arrangement which will appear more fully hereinafter.

The nature of the invention will. be understood from the following specification taken with the accompanying drawings, in which one embodiment is illustrated.

In the drawings,

Fig. 1 shows a side elevation oi the improved scale with portions of the casing broken away to show the relation of the weighing mechanism to the recording and computing mechanism;

Fig. 2 shows an end elevation of the scale i1lustrated in Fig. 1;

Fig. 3 shows an enlarged side elevation of the weigliing mechanism of the scale ing removed;

Fig. 4 shows a top plan. view weighing mechanism illustrated the casing bein Fig. 3;

Fig. 5 shows a vertical section taken on the line '.i-5 of Fig. 3;

Fig. 6 shows a vertical section on the line 6-6 of Fig. 3;

Fig. 7 shows an enlarged hor taken on the line 1-4 of Fig. 3

izontal section Fig. 8 shows a vertical section taken on theline 88 ofFig. 7;

Fig. 9 shows a vertical section taken on the line 9.'-9 of Fig. '7, showing in elevation the rotating cams by which the member which actuates the recording mchanism is periodically adjusted 'to a new position corresponding with the load on the scale, at times when the scale beam is locked against movement, the relation of the parts being that which they occupy when the scale beam 'is' free to move underthe influence of the loadf Fig. 10 is a sectional view like that of Fig. 9,

except that'the scale beam is shown as beingv locked'against movement and thelower one of the pair of rotating cams is engaging a pin carried by the beam to *effect a downward movement of the member by which the recording mecha nism is actuated to indicate the load on the scale;

Fig. 11 is a View similar to t hose of Figs. 9

.of the improved and 10 but showing the relative positions after further movement of the cams and after a corresponding downward movement of the member which actuates the indicating or recording mechanism;

Fig. 12 shows an enlarged vertical section similar to that of the right-hand portion of 9. with the scale being locked against movement, illustrating the relation to the pin carried by the scale beam of the rotating positioning cams when the pin is first engaged by the upper cam; Fig. 13 is a view similar to that of the upper part of Fig. 12, showing the relative positions of the parts after further rotation of the cams, wherein the member actuates the recording mechanism has been elevated by the rotation of the inner portion of the upper cam while the outer portion of the upper care has remained stationary in contact'with the pin, and preliminary to the engagement with the pin of the lowor positioning cam;

Fig. 14 is a View similar to that of Fig. 13, showing the relative positions of the parts after the outer portion of the upper cam has been turned out of engagement with the pin by the action. of its spring, while the continued'rotation of the lower cam is about to bring it into engagement with the under side of the pin;

1 Fig. 15 is a vertical section taken on the line l55 of Fig. 1Qshowing the actuating and recording mechanism in elevation;

Fig. 16 is a detail section taken on the'line iii-H3; of Fig. 15;

Fig. 17 is a vertical section taken on the line H-il of Fig. 15; and

Fig. 18 shows an enlarged side elevation of the rotating drums of the. indicating and recording mechanism.

As shown in Figs. 1 and 2, the improved scale of the present invention is illustrated as comprising a casing 29 adapted to rest upon a table or other support and having housed within the body portion thereof a weighing mechanism which is actuated by the load placed upon the pan or tray 2! located above the body portion of the casing. mounted the mechanism for periodically locking the weighing mechanism against movement and for actuating the member by which the position of the weighing beam is periodically recorded, a portion of this mechanism being located in an upper extension 20* of the casing. Thecasing also includes at the end thereof adjacent the part 20 a horizontal extension 26 in which is located the indicating and computing mechanism of the scale. The casing 25.? and the scale mechanism are carried by a base 22 which is secured within the outer walls of the casing and which has extending upwardly therefrom a pair of posts or standards 23 adapted to support the scale beam 24 which comprises a longitudinal member 24 located adjacent one side of the casing and having secured thereto a rectangular lateral extension comprising a parallel longitudinal member 21 3 and transverse end members 249 which are secured to these parallel members by studs 25. The side members of the beam carry projecting knife edge pins or bearing members 2% which are adapted to rock upon the knife edge bearings 21 carried by the posts 23. At the right hand end. as viewed in Fig. 3, the beam carries plates 28 and Zfiwhich are secured in place by screws 39 and which are adapted to serve as a counterweight for properly balancing the beam on. its bearings when there is no load on the scale.

In one end of this casing there is side of the knife edge bearings, there is mounted an adjustable counterweight 3! carried by a rod 32 which threadedly engages a transverse member of the beam, as shown in Fig. so that it may be adjusted longitudinally to regulate the initial balance of the beam and the zero position of the indicating or recording device which is actuated by the beam. Above the rectangular housings 33 adapted to enclose and support the knife edge bearings 35 which rest upon the knife edge members 36 secured to and projecting laterally from the parallel side members of the beam 24. The platform 33 thus has a knife edge support upon the'beam and to maintain the platform 33 in a stable position on these bearings, a downwardly extending arm 3'! is secured to an intermediate part of the transverse member 33 of the platform and this arm is pivoted at 38 to a horizontally extending link 39 having a pivotal connection through apin 4t with a block 4| attached to the base 22.

Since the knife edge bearings 35, 36 are displaced endwise of the beam from the knife edge bearings 25, 21, a load placed upon the pan or tray will cause the beam 24 to swing downwardly about the knife edge bearings 27. This downward movement is opposed by counterbalancing mechanism illustrated particularly in Fig. 5, where it is shown as being connected to a block 43 attached to the end of the beam 24 by means of a screw 44 which clamps the reduced extremity 43* of the block within an aperture formed in the beam. The block 43 is provided with a fiange 43* which extends into the notch 45 of a bracket 45. The flange 43 is engaged on its upper and lower sides by adjustable clamping pins 45 andthe motion of the beam 24 is thus, transmitted through the bracket 45 to a strap 41 which extends over the arcuate surface of a sector 48 with its upper end secured by a screw 49 to the upper edge of the sector. The sector is pivoted at 5!! on a member 5i with respect to which it is capable of relative angular adjustment by means of screws 52. The member 5| carries knife edges 53 which rest upon the knife edge bearings 5:3 carried by blocks '55 which are in turn sup ported by posts 56 extending upwardly from the upper transverse frame members 57 and 58 of vertical frames 5'! and 58. respectively, which comprise vertical frame members 57 and 58 extending upwardly from and secured to the base as shown in Figs. 3 and 5. The posts 56 are spaced apart by a rod 6?! which is secured to them by studs E3. The member 5! which is thus supported by the knife edge bearings on the frame member 55, carries an arm 59 having a On the otherthrough the knife edge bearings 53, 54, but, as

the load on the pan is increased, the arm 59 of the weight 66 swings upwardly toward a horizontal position with the result that the force required to elevate the weight gradually increases. The counterbalancing effect of the weight 60 is thus made proportional to the weight on the pan or tray 2! to such an extent that the movements of the extremity of the beam 2d are proportional to the load.

Instead of transmitting the motion of the beam directly and causing the indicating and recording mechanism to be actuated, in whole or in part, by the energy of the moving beam, as in the prior practice, the present invention provides a mechanism for periodically locking the beam '24 against movement as it descends under the influence of the load. For the purpose of effecting this locking action, the main longitudinal member of the beam 24 is provided adjacent its extremity with a downwardly extending arm 24 adapted to be engaged on its opposite sides by a pair of locking levers 54, as shown in Figs. 8, 9, 10, 11 and 12. These locking levers are pivoted at 65 between transverse members 68 carried by -the base 22 and they are provided at their upper extremities with disks 54 of brass or the like, which are adapted to engage the opposite flat faces of the arm Ed to hold the beam against movement. The upper ends of these levers are connected by a coil spring 6"! which is connected thereto by pins 68 and this spring acts normally to force the disks of the locking levers into engagement with the side faces of the arm 24 The upper ends of the locking levers 64 are periodically moved out of engagement with the arm 24 by means of a continuously rotating cam or disk Til which is mounted upon a horizontal shaft H journaled in bearing members 12 carried by the base 22. The cam or disk 70 has pins m projecting from opposite sides thereof in alignment with each other and these pins are rounded at their outer ends so that they are adapted to act as cams in engaging the edges 64" of the locking levers and thus wedge the levers apart as the cam rotates. After passing over the edges 64 which have a normal spaced relation less than the distance between the outer ends of the pins Hi as shown in Fig. 12, the pins are adapted to pass through. the notches 64 of the locking levers, whereupon the disks 84 of the levers are again forced into gripping engagement with the arm 24 by the action of the spring 81. The arm 24 of the beam is thus gripped and released once during each rotation of the cam 16 which, although occupying a definite position on the shaft 7!, is preferably permitted to have a slight lateral rocking motion which will permit it to adjust itself to the locking levers i l in such a manner that the two disks 64 carried by these levers will i always engage opposite sides of the arm 23 at the same time. The shaft H is adapted to be driven by an electric motor 73, shown in Figs. 3 and 4, which has its frame secured by screws M upon a transverse member iii of the base 22.

ie motor shaft 13* has mounted thereon a worm 16 arranged to mesh with a worm wheel Tl fixed on shaft '58 within a housing i9 extending endwise from the motor casing, as shown in Figs. 4 and 5. The shaft 78 has a gear 81.! secured thereon to mesh with another gear 8! fixed on the shaft ll, previously referred to, sothat when the motor 53 is in operation, the shaft H and the cam 16 are continuously operated to effect an intermittent gripping of the scale beam 24.

During each interval that the beam 24 is locked in stationary position by the locking levers 64, the position of the beam is measured by the position-recording mechanism of the present invention and these successive measurements result in the movement of an actuating member which is proportional to the load on the beam so that the movement of this actuating member may be transmitted to the indicating and computing mechanism of the scale to indicate or record the weight being measured. For the purpose of making these successive determinations of the position of the beam 24, the free end of the beam is provided with a laterally projecting pin 35, shown in Figs. 8 to 14: inclusive, which has a reduced extremity B engaging an aperture in the beam where it is secured in place by a set screw 86. The pin 85 is adapted to be engaged successively on opposite sides by two continuously rotating cams 8i and 88 which are rotatably mounted upon stub shafts 85% mounted in avertically movable bar 'lltl constituting a part of the actuating member St, the body portion of which is in the form of a rectangular plate secured to the bar fin by means of screws 9|. The bar 90* has a dovetail sliding engagement with one of the lateral vertical frame members 57* of the frame 5'? and with anadjacent parallel frame member 51, shown in Figs. 5, 7 and 8. The cams 61' and 8i! are adapted to be rotated in the directions indicated by the arrows 92, in Fig. 12, through the operation of intermeshing gears 93 and 94 which revolve on the shafts B9. The lower gear 94 is secured to the cam 88 by a key or the like and the upper gear 93 is formed integrally with an inner cam 81 which forms a complementary part of the upper cam 8'5. The cam fil revolves in an eccentrically located aperture formed in the outer portion 81 of the cam which is provided with an arcuate slot 87 engaged by a pin 95 projecting from the face of the adjacent gear 93. The end of this pin is connected by a coil spring 95 with another pin 91 projecting from the outer cam portion 87" and the parts normally occupy the relative positions shown in Fig. 7. When the outer portion iil of the cam engages the upper side of the pin 85 carried by the beam 26, the two portions of the cam Bl are adapted to have relative rotative movement, as hereinafter more fully explained. In order that the actuating member 98 may be always brought to its final position by the coaction of the same members, the apparatus is so arranged that the cam 88 engages the under side of the pin 85 after the pin has been engaged on its upper side by the cam 81 and these successive engagements of the cams with the pin are adapted to effect a vertical adjustment of the actuating member 98 to a position corresponding to the weight on the scale. In order to hold the actuating member 98 in adjusted position, a pin 98 is secured to one side of this member, as shown in Fig; 13, and a member 99 is mounted on this plate and arranged to carry a reversely bent leaf spring 30 which bears against one edge. of the intermediate vertical frame member 5?. The member 99 may be adjusted angularly about the pin 98 to vary the pressure of the spring on the frame member and it may be secured in adjusted position by a set screw fill.

The movement of the actuating member 96 is adapted to be counterbalanced by a weight it, shown in 3, which is adjustably mounted by means of set screw lfbl upon the end of lever Hi5 which is pivoted at Hi6 on a standard it? extending upwardly from the base 22. The other 1 transmitting shaft I I 5.

end of this lever has engagement with an aperture formed in the lower part of the actuating member 8!] so that the weight of the member as and parts carried thereby is counterbalanced in such a manner that the vertical adjustment of the actuating member may be effected with a minimum expenditure of energy. The power for rotating the cams 8'! and ilii and thereby causing the actuating member 99 to assume a position corresponding to the position of the pin carried by the scale beam is applied through a gear iiii which meshes with the gear M, as shown in Figs. 5 and '7, and which is mounted to revolve about a shaft I I I having its ends journaled in the actuating member Sir and in a bracket iii! secured to and having a part spaced outwardly from the member 99. The gear Hi3 has a bevel gear H3 secured to the face thereof and arranged to mesh with another bevel gear H4 fixed upon a power The shaft I25 is provided at its upper end with a reduced. portion i it which extends through an aperture in the stationary shaft I I E, as shown in Fig. 6. The member H6 is threaded for engagement by a nut ill which has the outer portion thereof knurled so that it may be turned by the finges of the operator. The other end of the shaft i it is connected through a universal joint H3 with. a horizontal shaft I28 which has a sliding and rotative engagement with bearing plates libi which are secured to the adjacent vertical frame member fi'l Between these bearing plates, a gear E22 is splined on the shaft i2li and this gear meshes with an intermediate gear M3 mounted to revolve about a shaft I24 carried. by the bearing plates 925 and arranged to mesh with a gear life fixed upon the previously described shaft ll. With this arrangement, the shaft l'I which is driven continuously by the motor 13, causes a continuous rotation of the shaft I I5 and the sliding engagement of the shaft 26 with the gear 122 permits such longitudinal movement of the shaft iiil as may be necessary to allow the shaft iiii to adjust itself to different vertical positions of the actuating member 90, the universal joint iii permitting continuous rotation of the shaft i if: in all of these positions.

The vertical movement of the actuating member 9b which takes place in response to the engagement of the earns 87 and Bi) with the pin 25 on the scale beam, is adapted to actuate the computing and indicating mechanism which is illustrated particularly in Figs. 1, 7, 8, l5, 16, 17 and 18. This mechanism comprises a price indicating drum 53?] and a weight indicating drum Iii! which are mounted side by side in the extension 20 of the casing. The drum i3!) is fixed on a hollow shaft I32 which is mounted to revolve on the telescoping shaft I33 on which the drum I3I is fixed. The shaft 532 is journaled in a standard 23 3 extending upwardly from the base 22 and the outer end of the shaft i323 is journaled in another standard L35 extending upwardly from the base. The shaft H3 which actuates the weight indicating drum iti has a pinion 53h fixed on the inner end thereof to mesh with a rack; bar I3? which is secured to the actuating member 913 so that as the actuating member is moved vertically in response to changes in the position assumed by the pin 85 on the scale beam 2d, the drum ml is rotated to indicate the weight on the pan 2|. The drum itli'i is provided on its outer side with graduations iiiii which are arranged in diagonal rows spaced apart so that a large nun1- ber of graduations may be placed upon a drum aperture in the extension 2t of the casing.

of moderate diameter. The weight on the pan is indicated by the registration of a particular graduation on the drum I35 with a stationary index mark I39, which may be a hair line on a transparent plate I40 mounted in an aperture in the casing extension 20 In order to indicate on the drum Hill the price at which the commodity on the scale pan 2I is to be sold, the drum I31] is arranged to be actuated by a pinion M3 mounted on the end of the shaft 533 and arranged to mesh with a horizontal rack bar Hi l which is constructed in the form of a rectangular frame having a lower arm HM which slides in a guideway M5 carried by the post 53d and a horizontal extension I i i which slides in a guideway Hi6 carried by another post Ml secured to the base 22. A price computing arm use is pivotally mounted upon a stud I carried by the lower part of the actuating member 80, as shown in Figs. 8 and 15, and this arm is pro vided with a longitudinal groove I St engaged by a pin 552 secured to the extension M4 of the sliding rack bar hit. Adjacent the upper end of the arm E59, the actuating member 98 is provided with a series of holes Sil which are arranged in an arc having its center coincident with the axis of the pin Ilil upon which the arm S50 is mounted. The upper end of the arm I5!) is provided with a lateral extension lbil provided with an aperture iiifil in which is mounted a ball i5 1 adapted to engage one of the apertures 90 in the actuating member when the computing arm I553 is properly positioned. A handle I55 is mounted in the enlarged end of the aperture ififl and this handle is provided with a socket in which is located a coil spring 156 adapted to press the ball SEQ into engagement with one of the holes 90* The actuating member 58 is provided with a series of graduations I5? each of which is located in registry with one ofthe apertures 90' and these graduations may represent the price per pound, for example, at which the goods on the pan iii are to be sold. At the commencement of the weighing operation, the computing-arm I5ii is turned until the handle 855 is in registry with the price of the goods, whereupon the ball I engages the registering aperture 93 and holds the arm l5Il against movement. Then, when the actuating member to is moved vertically to turn the drum Ifii and thereby indicate the weight of the goods with reference to the index mark I 39, the pin i52, engaging the groove IE8) in the computing arm, causes the rack bar I44 to move horizontally, thereby turning the shaft of the drum iiiil. This drum is provided on its periphery with graduations 130 and one of these graduations is brought into registry with an index line 459 carried by a transparent plate it which is mounted in an The parts are so graduated that the horizontal movement of the rack bar HM, with the computing arm I50 set in the proper position, will cause a graduation 53th to be brought into registry with the index mark 259 which will indicate the total price of the goods whose weight is indicated by the position of one of the graduations I tI with respect to the other index mark IZ-l As shown in Fig. 2, the end wall of the casing 2b is provided with an arcuate slot 26 which permits access to the handle [55 by which the computing arm I53 is adjusted. The ball I541 engages in one of the apertures 90 with sufficient pressure to hold the arm E50 against angular movement during the vertical movement of the actuating member 96 but when a manually applied pressure is exerted ill) occupy its normal or zero position, and the actuating member 96 is in the upper position shown in Fig. 9 with the upper cam 81 engaging the pin 85. If a load be then placed on the pan 'ZI, the beam 24 will move downwardly and carry with it the earns 81 and $3 and the actuating member 90, the arm 24 moving freely between the locking levers 64 when these levers are separated, as shown in Fig. 9. The next time that the arm 24 is locked by the levers 64, the parts may occupy the relative positions shown in Fig. 10, wherein the scale beam 24 and the positioning pin 85 are lowered by the eiiect of the weight. This has also caused a lowering of the actuating member fill and the pin 8-5 is shown as being engaged by the lower cam 88 while the upper cam is spaced a considerable distance therefrom. In Fig. 11, the scale beam 24 is still locked in sta tionary position but the cam 88 has continued its rotation and has effected a still further depression of the actuating member 99 due to the coaction of the cam with the under side of the pin 35. The action of the two cams 87 and 88 in engaging the pin 85 and effecting an adjustment of the actuating member to correspond with the load on the scale cam, is illustrated some-- what more clearly in Figs. l2, l3 and 14. In Fig. 12, the scale beam 2% is shown as being locked in stationary position by the locking levers 5d and the upper cam 8? is in engagement with the pin while the lower cam 38 is a considerable dis-- tance below the pin. As soon as the outer portion 81 of the cam 83 engages the pin 85, the frictional contact causes this portion of the cam to remain stationary in contact with the while the inner portion fil of the cam continues its relative rotation with a resulting elongation of the spring This continues until the parts reach the relative positions shown in Fig. 13, during which time the lower cam 88 will have continued its rotation and will be near the under side of the pin 35. At this point, and before the lower cam 88 engages the pin 35, the elongation of the spring 8% will have reached its limit, due to the engagement of pin with the other end of the slot 81 in the outer portion of the cam and the continuously rotating gear 93 then causes the outer portion 8'! of the cam 81 to turn quickly from the position shown in Fig. 13 to the position shown in l4. ie pin 85 is then released by the upper cam ill but is about to be engaged. by the lower cam 83 which then efi'ects a final positioning of the actuating member 9i! to correspond with the position then occupied by the scale beam In this way, the final positioning of the actuating member, each time that the scale beam is locked in stationary position by the looking lever Ed, is effected always by the lower cam 83, following an initial positioning by the upper cam 8'! which, by reason of the action of the relatively movable parts of this is maintained until the lower cam is about to engage the under side of the positioning pin. Thispositioning of the actuating member as takes place each time that the scale beam 24 is locked in stationary position with the result that the drums I3I are gradually moved to a finalposition indicating the Weight and price, respectively, of the goods on the scale pan, the final positions assumed by the drums with respect to the stationary index marks I39 and I59 being those corresponding with the position of equilibrium assumed by the scale beam 24 under the influence of its load. The actuation of the mechanism for locking the scale beam and the mechanism for moving the actuating member 96 and adjusting the positions of the drums'ISB and IEI is effected entirely by power supplied through the electric motor 53 so that the weighing, recording and computing operations are effected without consuming any of the energy of :1

the load on the scale pan.

Although one form of the invention has been shown and described by way of illustration, it will be understood that it maybe constructed in various other embodiments coming within the scope of the appended claims.

I claim: I

l. The combination in weighing scales, of a member movable in proportion to the load on the scale, means for periodically holding said member in any of various positions assumed by said member during the determination of the weight of a load, and means actuated independently of said load for indicating the position of said member each time it is so held.

2. The combination in Weighing scales, of a member movable in proportion to the load on the scale, means actuated independently of said load for intermittently locking said member in any of various positions assumed by said member during the determination of the weight of a load, and load indicating means independently movable to a position responsive to the position of said member while it is held in such positions.

3. The combination in weighing scales, of a member movable in proportion to the load on the scale, means actuated independently of said load for intermittently locking said member in any of various positions assumed by said member during the determination of the Weight of a load, and

load indicating means responsive to the position of said member while it is so locked, said load indicating means being actuated independently of said load.

4. The combination in weighing scales, of at member movable proportional to the load on the scale, means actuated independently of the load for periodically locking said member in any of various positions assumed by said member as said member moves to a position of equilibrium f.

dui'ingthe determination of the weight of a load, I

and power driven load indicating means responsive to the position of said member while it is so locked for indicating the load on the scales.

6. The combination in weighing scales, of a member movable in proportion to the load on the scale, means for periodically locking said member in any of various positions assumed by said member during the determination of the weight of a load, and continuously actuated power driven or s means for engaging and recording the position of said member each time it is so locked.

7. The combination in weighing scales, of a member movable in proportion to the load on the scale, means for periodically locking said member in any of various positions assumed by said member during the determination of the Weight of a load, and means comprising a continuously actuated power driven cam for periodically engaging said member for recording the position of said member each time it is so locked.

8. The combination in weighing scales, of a member movable in proportion to the load on the scale, means for periodically locking said member in stationary position, and means comprising a pair of continuously actuated power driven cams periodically engaging opposite sides of said member for recording the position of said member each time it is held stationary.

9. The combination in weighing scales, of a member movable in proportion to the load on the scale, means for periodically locking said member in stationary position, and means comprising a pair of continuously rotating power driven cams .engaging opposite sides of said member in succession for recording the position of said member each time it is held stationary.

10. The combination in weighing scales, of a member movable in proportion to the load on the scale, means for periodically locking said member in stationary position, and means comprising a pair of continuously actuated power driven cams periodically engaging opposite sides of said member for recording the position of said member each time it is held stationary, one of said cams comprising inner and outer parts having relatively angular movement adapted to permit the outer part to have a predetermined period of engagement with said member.

11. The combination in Weighing scales, of a member movable in proportion to the load on the scale, means for periodically locking said member in stationary position, and means comprising a pair of continuously actuated power driven cams periodically engaging opposite sides of said member for recording the position of said member each time it is held stationary, one of said cams comprising inner and outer parts having relatively angular movement adapted to permit the outer part to have a predetermined period of engagement with said member while permitting continued rotation of the inner part, and resilient means for restoring said outer part to its initial position with respect to said inner part at the end of said period.

12. The combination in weighing scales, of means for supporting a load, a positioning member movable in proportion to said load, means for periodically locking said positioning member in any of various positions assumed by said member during the determination of the weight of a load, an actuating member, means carried by said actuating member for periodically engaging said positioning member while it is so locked, and indicating means operated by said actuating member.

13. The combination in weighing scales, of means for supporting a load, a positioning member movable in proportion to said load, means for periodically locking said positioning member against movement, an actuating member, power driven rotatable cams carried by said actuating member to engage said positioning member when said positioning member is held in stationary position, and indicating means actuated by said positioning member.

14. The combination in weighing scales, of a load carrying beam having movement proportional to the load thereon, means for periodically locking said beam in stationary position, a motor for actuating said lOCklllg means, a movable actuating member, a positioning member carried by said beam, a rotating member mounted on said actuating member and adapted to engage said positioning member when said beam is held stationary to effect movement of said actuating member, and means driven by said motor for operating said rotating member.

15. The combination in weighing scales, of a load carrying beam having movement proportional to the load thereon, means for periodically locking said beam in stationary position, a motor for actuating said locking means, a movable actuating member, a positioning member carried by said beam, a rotating member mounted on said actuating member and adapted to engage said positioning member when said beam is held stationary to effect movement of said actuating member, means driven by said motor for operating said rotating member, and indicating means operated by the movement of said actuating member.

16. The combination in weighing scales, of a load carrying beam movable in proportion to the load thereon, means for periodically locking said beam in stationary position, a positioning mem ber carried by said beam, a slidably mounted actuating member, a pair of rotatable cams mounted on said actuating member and adapted to engage opposite sides of said positioning member when said beam is held stationary, a motor, and a flexible driving connection from said motor to said cams to permit the operation of said cams in any position of said actuating member.

17. The combination in weighing scales, of a load carrying beam movable in proportion to the load thereon, means for periodically locking said beam in stationary position, a positioning member carried by said beam, at slidably mounted actuating member, a pair of rotatable cams mounted on said actuating member and adapted to engage opposite sides of said positioning member when said beam is held stationary, a motor, a

flexible driving connection from said motor to said cams to permit the operation of said cams in any position of said actuating member, and weight indicating means actuated by the movementof said actuating member.

18. The combination in weighing scales, of means for supporting a load, an indicating device, a slidably mounted operating member for operating said device, an actuating member having movement transversely to the path of movement of said operating member, adjustable means for connecting said operating member and said actuating member to eiiect the operation of said operating member by said actuating member, means for setting said adjustable connecting means according to the price of the goods being weighed, and means for moving said actuating member in proportion to the load on the scales.

19. The combination in weighing scales, of means for supporting a load, an indicating device, a slidably mounted operating member for operating said device, an actuating member having movement transversely to the path of movement of said operating member, an arm pivoted on said actuating member and adapted to be adjusted to an angular position corresponding to the price of the goods being weighed, said arm being provided with a longitudinal slot, a pin carried by said operating member and engaging said slot, and means for moving said actuating member in proportion to the load on the scales.

20. Weighing apparatus of the character described comprising, in combination, load-counteibaiancing mechanism adapted to oscillate upon the application of a load, braking means 10 adapted to engage the mechanism for temporarily arresting its oscillation, power-driven means for operating the braking means intermittently to release the mechanism during successive periods of a predetermined uniform length, indicating means normally disconnected from the mechanism, and means for operatively connecting the indicating means with the mechanism is an interval during which the mechanism is arrested by the braking means.

EDWIN M. SCHANTZ. 

